We booked two rooms and stayed for two nights. Overall experience was good and I would recommend this place.
The good:
Location is super convenient. Restaurants, shopping area, Plaza de Armas, all within walking distance.
Staffs were very helpful. They don't all speak English, but they try everything they can to help and were super patient with my broken Spanish and communicatibg with me through Google translate.
Not so good:
We stayed at the rooms on 9th floor (with a view overlooking Lake Titicaca, which is super nice), the internet connection wasn't working most of the time. We had to reconnect every 5 mins or so, and the signal wasn't very good even when we were connected.
We were there in mid Dec, and the locals were doing some pre-celebration for a festival in Feb, so there was a 3 Day parade over the weekend and the street was filled with people, music. I found it fun to watch but the friends travelling with us said the noise made it hard for them to fall asleep at night.